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Ok now I'm scared I hit 2351mhz....

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Have you tried less aggressive settings on the memory? Try 2.5-6-3-3 or SPD timings and then shoot for 200. If you don't hit it then, it will be pretty conclusive that your board can't handle 200.

You could also try removing the northbridge heatsink and putting some of your Artic Silver on the Northbridge core, as that should lower temps a bit.

I had no problems hitting 200+ FSB on my old Epox 8K3A, so it is a little disappointing that a newer board can't even go as high as that KT333 could.
 
Well I did try a bit less aggresive memory timings I went 6,3,3,3. I will try your mem timings and report back the results. YEah it did post one time @ 11multi and 200FSB it was damn fast 😀. Ok I'll try it would love to be running at 200 FSB what is your suggestion for a good starting multiplier then? ie 10 or 11? Almost forgot what is SPD timings I saw it in the bios as a choice but didn't know what it was. I remeber someone saying it could be bcause the board has agp locking to 166?




Thanks,
-ES
 
Hey there I tried your mem setting for 200 fsb no go 🙁 but the good news is it seems to be running stable @ 195 FSB with these mem setting will run prime 95 tonight to see the outcome thanks!

-ES
 
Good job my friend. 200 is not always attainable without some MODS. I did put some AS3 bnetween the stock NB hs and NB, but thats it for me. I just may hve lucked out and got a good setup.
195 x 11 or 11.5 is nothing to sneeze at. U pretty much got u a setup thats is faster then if u had n xp2800 running at the standard FSB 🙂

ENjoy.
 
Thanks mboy yeah all in all I am pretty happy with the rig but still a few more questions I have my 1 stick of mem in slot 1 is this optimal? Also when I was running @ 200 FSB the screen kept refreshing everyonce in awhile sign that it too much right?. You mentoned putting some artic silver on the northbrige chip that is the one under the circular heat sink? If I am to do this how do I pop off the heat sink without damaging the chip? I think the only way I'm going to get to 200FSB is by buying an Asus board from the reseach I've done so far many people with my components hit that FSB no problem oh well I sill like my Epox 8RDA+ for the money 🙂.

Thanks man!,
-ES
 
If you have one stick of RAM, you are better off getting a board with the KT400 chipset since the nForce is designed to run in Dual-Channel mode, and you will have a much easier time breaking the 200 mark with the VIA chipset. Actually, you may wanna wait a week or so, as the KT400A is about to be released.
 
Hey Ketchup,

Thanks you answered the question I have been asking for awhile now I thought since I was running just one stick of ram I may be limited to my OC. So to reach a FSB of 200 I guess best to wait and get another stick of corsar XMS 512M PC3200 and run in dual mode cool thanks man! So with two sticks is a mem setting of 5,2,2,2 realistic @ 200 FSB?

-ES
 
Well, I wouldnt go towards the kt400 or 400 a boards. The nforce2 is stil the way to go. the VIA chipsets have ALWAYS been buggy in the past Also no guarantee that the asus will hit 200fsb either.
u may get a 2-5% gai in dual channel ram mode, thats all.
If u are inexperienced with messing with heatsinks and stuff, I wouldnt owory abut the as3 on the NB. You haver to take the mobo out anyway to do it.
U have to remember, overclocking is ALWAYS hit and miss. They key is finding the stable limits of your setup.
Sometimes 200fsb just isnt obtainable. I helped a friedn out last niter, 8rda+ and xp2100. He could only hit 195x11 stale (his processor was runing VERY warm tho, so we may switch his HS fan.

Even tho I am clocked higher, his mem bandwidth tests is sandra pro 2003 were slighlty under mine.

As far as the mem goes you may want to look into Twinmos/winbond or the kingston hyperx pc3200-3500 series as they are reportedly the best for the 8rda Nforce boards and they are MUCH cheaper then ther Corsair.

make sure u have the AGP locked at 66mhz.

This Oc'ing thing is pretty addictive huh?

Keep us informed and dont be shy about asking more ???s. I believe thats what Anand had in mind when he set this place up 🙂

Oh yeah, 9.5xs out of 10, you will get a higher OC runing just 1 stick of ram or at the very least it will be just as high as with 2 stivcks, so dont think the only 1 stick will limit how high your FSB will go.

TRUST ME, be happy with 11-11.5 xs 190-195, you wont be able to tell a difference over 200fsb 🙂

Altho Anandtech is by far my most favorite out of all websites, u may want to look at amdmb.com as they have excellent forums for each individual mobo manufacturer, etc. U will learn a lot about AMDstuff and wil get a good feel from others with simialr setups.
 
Hey Evilsponge, having two sticks of RAM will increase your performance slightly, like mboy said, but it won't help your overclock. Because of the added latency addressing two sticks of RAM, you may actually have to lower your memory timings to get two sticks to run at the same speed as one. Running in dual-channel means that the chipset has the ability to combine the bandwidth of both sticks of RAM when delivering information to the CPU. Unfortunately, the AMD Athlon, Durun, XP are designed to use the bandwidth of one channel of DDR, so dual-channel doesn't help all that much, but every little bit helps right?

Mboy, I don't agree with you that the nForce is that much faster than the other chipsets, especially the KT400A that is soon to be released. Preliminary tests I have seen show the KT400A to beat out even the nForce2 in dual-channel mode. Also, I had zero problems with my previous AMD boxes with the KT266A and KT333 chipsets, so I am not sure as to what you are talking about being buggy. And I was able to take them up over 210 FSB, something I haven't seen someone claim with an nForce2, so any small performace gain on the part of the nForce 2 would be lost due to lower max FSB. Don't get me wrong, I like the nForce 2, but VIA makes fine chipsets too, and until recently, they made by far the best AMD chipsets, so it is good they have some competition.

Evilsponge, have you hit the limit of your CPU yet? You may wanna try lowering your FSB a bit a raising your multiplier and CPU voltage a bit. Higher FSB will give you a nice performance boost, but nothing beats more raw CPU power. As others have said, you can raise the vcore a little more and still be safe. Also, keep in mind that the higher FSB is not only harder on your RAM, but on your CPU. For example, it will take more juice to run your CPU at 2.xx GHz at 200 FSB than to run it at the same speed at 133 FSB, so keep that in mind when overclocking. A couple years ago when I had a 1 GHz Athlon, I left the FSB at 133 and took the multiplier up until the chip wouldn't go anymore, around 1.4 GHz as I recall. Then I started lowering the multiplier while running up the FSB to keep my speed to find the sweet spot. AMD chips are fun to overclock since the multiplier is unlocked.

 
Thanks guys yes this is pretty fun I love tring to get the best performance out of anything through modification so this is a blast
Well right now I'm running prime95 with an FSB of 190 and a multi of 12 I tried 195 but it failed pro out the gate. So far after five hours run time no errors or critical stops the process is running * 2340Mhz with a Vcore of 1.72V under load cpu temps are at 37-38 c
I am thinking if prime runs error free uping it to 12.5 or 13 do you guys think it is safe? Anyway thanks for the advise and help it is appreciated I will try and return the favor to someone else someday and mboy I'll check out the amd forum as you suggest.

-ES
 
just keep going until your system gets unstable or you get errors..

just as long as you stay under 1.85V, you're pretty much safe no matter how high you clock your chip...
 
Originally posted by: EvilSponge
Thanks guys yes this is pretty fun I love tring to get the best performance out of anything through modification so this is a blast
Well right now I'm running prime95 with an FSB of 190 and a multi of 12 I tried 195 but it failed pro out the gate. So far after five hours run time no errors or critical stops the process is running * 2340Mhz with a Vcore of 1.72V under load cpu temps are at 37-38 c
I am thinking if prime runs error free uping it to 12.5 or 13 do you guys think it is safe? Anyway thanks for the advise and help it is appreciated I will try and return the favor to someone else someday and mboy I'll check out the amd forum as you suggest.

-ES
Click to expand...


Yup, as long as u keep the vcore down to 1.85 or less (couuld probably go higher if u wanted, but not worth risking it), u are fine.

Get it as high as can can as stable as u can 🙂

I would be quite happy with 2.34 ghz and a 190fsb. That is def. a nice OC.
I coudl probably mess with mine a litle more and squeeze out a few more Mhz or fsb, bu to be honest, I am content right where I am.
 
Hey guys,

New update thanks to some helpful folks on the AMD forum... I have acheived the following...

AMD Athlon XP 1790 Mhz @ 2350 Mhz
Multi: 12
FSB: 195
Mem: 5,2,2,2
Mem Freq: 100%(Sync)
AGP freq: 66 Mhz
VDim: 2.77
Vcore unloaded: 1.74V
Vcore loaded: 1.79V
CPU temp unloaded: 34-35c
CPU temp loaded: 39 -41c

Attached small cpu fan to Nividia south bridge heat sink
Added ram heat sinks to mosfets behind PCI slots
Added passive heat sink to Nvidia north bridge

Currently stable. Prime ran for 8hrs 0 errors

I am estatic I am leaving everything the way it is. Thanks for the help guys now the real fun begins actually getting to use the thing opposed to tweeking and testing all the time 😀

 
Some people claim 24 isn't enough, others say you only need 8 to prove out stability. It doesn't take much to run 24 hours, as it's an even better test if you're doing other things at the same time!

I was more than satisfied with 24 hours.
 
I havent run it 24 hours, but I did run it for 10 or so with 3 hours of gaming while it was running. I think 8 is fine, but since it is free u can always go for 24 🙂
 
Originally posted by: EvilSponge
Hey guys,

New update thanks to some helpful folks on the AMD forum... I have acheived the following...

AMD Athlon XP 1790 Mhz @ 2350 Mhz
Multi: 12
FSB: 195
Mem: 5,2,2,2
Mem Freq: 100%(Sync)
AGP freq: 66 Mhz
VDim: 2.77
Vcore unloaded: 1.74V
Vcore loaded: 1.79V
CPU temp unloaded: 34-35c
CPU temp loaded: 39 -41c

Attached small cpu fan to Nividia south bridge heat sink
Added ram heat sinks to mosfets behind PCI slots
Added passive heat sink to Nvidia north bridge

Currently stable. Prime ran for 8hrs 0 errors

I am estatic I am leaving everything the way it is. Thanks for the help guys now the real fun begins actually getting to use the thing opposed to tweeking and testing all the time 😀
Click to expand...

damn......and i was thinking to give you the link for the nforce2 northbridge voltage mod

🙂
 
Darn I spoke too soon this is weird though ran prime 95 10 hours no errors ran 3dmark03 and it locked up 🙁 I reduced my FBS to 190 and oced the geforce to 280/540 runs perfect it really looks like my system is maxed @ 190 fsb and 12 Multi and a speed of 2290 Mhz still pretty good I guess

-Es
 
I think your FSB is maxing out your video card, but not your CPU. If you are lowering the FSB, go ahead and raise your multiplier, as your CPU can obviously handle 2350 MHz.
 
Originally posted by: EvilSponge
Darn I spoke too soon this is weird though ran prime 95 10 hours no errors ran 3dmark03 and it locked up 🙁 I reduced my FBS to 190 and oced the geforce to 280/540 runs perfect it really looks like my system is maxed @ 190 fsb and 12 Multi and a speed of 2290 Mhz still pretty good I guess

-Es
Click to expand...

it's time to get better ram 😀 😀 😀 😀

i'm getting some no name pcb with winbond (Bh-5) memory for cheap... pc3200 512mesg for less than 100... if it works well, i'll let everyone know
 
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